US6101843AExpiredUtility

Double-structure ring

Priority: Nov 7, 1996Filed: Oct 28, 1997Granted: Aug 15, 2000
Est. expiryNov 7, 2016(expired)· nominal 20-yr term from priority
Inventors:Tomohisa Nagano
A44C 9/003A44D 2203/00
84
PatentIndex Score
88
Cited by
9
References
11
Claims

Abstract

A finger ring which is not only outstanding as an accessory but provides the fun of toying with and the benefit of diversion. This double-ring finger ring comprises an inner ring and an outer ring, with magnets mounted in an outer circumferential region of the inner ring and in an inner circumferential region of the outer ring with their like poles facing each other.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A ring assembly for encircling a finger, said ring assembly comprising, in combination, a radially inner ring and a radially outer ring, each of said rings having a diameter, the diameter of the radially outer ring, being larger than the diameter of the radially inner ring, said rings being concentric and being located in the same plane, each of said rings defining an outermost circumferential surface, said rings each being adapted to encircle a finger, said circumferential surfaces of said rings facing each other radially and being separated from each other by at least a radial working clearance space so as to be coaxially rotatable relative to each other, a plurality of magnets mounted fixedly in said radially outer ring and a plurality of magnets mounted fixedly in said radially inner ring, said magnets being disposed respectively adjacent the radial working clearance space separating said radially inner ring from said radially outer ring, said plurality of magnets being also spaced circumferentially apart, one of said inner ring and said outer ring having at least one portion extending radially beyond a portion of said other ring, whereby said inner and outer rings are kept in approximate axial alignment with each other. 
     
     
       2. A ring assembly as defined in claim 1, wherein said plurality of magnets comprises four magnets in each ring. 
     
     
       3. A ring assembly as defined in claim 1, wherein said radially outer ring includes at least one precious stone mounted therein. 
     
     
       4. A ring assembly as defined in claim 1, wherein said radially inner ring is at least slightly axially longer than said radially outer ring, said radially inner ring including two upturned end portions, each extending radially beyond a portion of said outer ring. 
     
     
       5. A ring assembly as defined in claim 1, wherein said radially outer ring includes axially outermost portions extending axially beyond portions of said inner ring, said axially outermost portions of said radially outer ring also extending radially inwardly over portions of said radially inner ring. 
     
     
       6. A ring assembly as defined in claim 1, wherein said radially outer ring includes an outer radial face having a plurality of raised formations thereon. 
     
     
       7. A ring assembly as defined in claim 1, wherein said radially inner ring includes at least one grooved portion, said grooved portion further including a matching insert portion with a radial flange portion extending radially outwardly beyond a portion of said radially outer ring, whereby said radially outer ring is axially secured against movement. 
     
     
       8. A ring assembly as defined in claim 7, wherein said radial flange portion is circumferentially continuous. 
     
     
       9. A ring assembly as defined in claim 1, wherein said radially inner ring includes two contoured grooves therein, each of said grooves having a correspondingly contoured insert placed therein, and each of said inserts lying axially outwardly of said inner ring and each having a flange extending radially beyond a portion of said radially outer ring, whereby said outer ring is secured against axial movement. 
     
     
       10. A ring assembly as defined in claim 9, wherein both of said radially extending flanges are circumferentially continuous. 
     
     
       11. A ring assembly as defined in claim 1, wherein said magnets in said radially inner ring and said magnets in said radially outer ring are oriented alike in polarity.

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